feat: Add debug output to Dockerfiles and .dockerignore

- Add .dockerignore to exclude node_modules, dist, and build artifacts
- Add pre/post build directory listings to diagnose dist not found issue
- Disable turbo cache temporarily with --force flag
- Add --verbosity=2 for more detailed turbo output

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

apps/web/Dockerfile

@@ -51,11 +51,23 @@ COPY --from=deps /app/apps/web/node_modules ./apps/web/node_modules
 ARG NEXT_PUBLIC_API_URL
 ENV NEXT_PUBLIC_API_URL=${NEXT_PUBLIC_API_URL}
 
+# Debug: Show what we have before building
+RUN echo "=== Pre-build directory structure ===" && \
+    echo "--- packages/config/typescript ---" && ls -la packages/config/typescript/ && \
+    echo "--- packages/shared (top level) ---" && ls -la packages/shared/ && \
+    echo "--- packages/ui (top level) ---" && ls -la packages/ui/ && \
+    echo "--- apps/web (top level) ---" && ls -la apps/web/
+
 # Build the web app and its dependencies using TurboRepo
 # This ensures @mosaic/shared and @mosaic/ui are built first
-# Cache TurboRepo build outputs for faster subsequent builds
-RUN --mount=type=cache,id=turbo-cache,target=/app/.turbo \
-    pnpm turbo build --filter=@mosaic/web
+# Disable turbo cache temporarily to ensure fresh build
+RUN pnpm turbo build --filter=@mosaic/web --force
+
+# Debug: Show what was built
+RUN echo "=== Post-build directory structure ===" && \
+    echo "--- packages/shared/dist ---" && ls -la packages/shared/dist/ 2>/dev/null || echo "NO dist in shared" && \
+    echo "--- packages/ui/dist ---" && ls -la packages/ui/dist/ 2>/dev/null || echo "NO dist in ui" && \
+    echo "--- apps/web/.next ---" && ls -la apps/web/.next/ 2>/dev/null || echo "NO .next in web"
 
 # Ensure public directory exists (may be empty)
 RUN mkdir -p ./apps/web/public